Wayne Thomas blasted Southampton on course to the last 16 with a stunning shot from 30 yards - the defender's second goal in four-and-a-half years.

Super sub Michail Antonio made it 2-0 by scoring with his first touch before a stoppage time goal from Ipswich's Pablo Counago ensured a grandstand finish.

Thomas may not score very often but this was certainly worth the wait.There seemed little danger when the right-back received the ball from Joseph Mills in the 32nd minute but Thomas unleashed a rocket from well outside the penalty area that Arran Lee-Barrett barely saw.

"A fantastic goal but a bit of a surprise to me," said Saints boss Alan Pardew. "It's not even as if he rattles them in during training. You need breaks like that in the FA Cup."

Pardew praised his team's spirit and determination. He said: "We had to dig deep, there were periods in the first half when we struggled. We showed resilience, spirit and a strong mentality."

Ipswich thought they had equalised four minutes after the interval but Carlos Edwards' throw-in went in the back of the net without anyone touching the ball. "I'm glad I wasn't the ref, I'd have given it. I didn't know that law," said Pardew.

Quality

Tractor Boys manager Roy Keane had no complaints. "No-one got a touch, the referee didn't give it and I have no issue with that.

"But we didn't do the work today. Our strikers needed better quality service. We played better when we were two down but it's easier then. The game starts at 3 o'clock."

Antonio made it 2-0 in the 74th minute, four minutes after coming on, tapping the ball home after Lee-Barrett had failed to hold Rickie Lambert's free-kick.

A few seconds into stoppage time Counago scored from the edge of the penalty area from a pass by Lee Martin. "It was too little, too late," said Keane.

Pardew was the manager of West Ham when they were on the brink of FA Cup Final glory in 2006, until Steven Gerrard's stoppage time equaliser forced a 3-3 draw. The Hammers lost a penalty shoot-out after extratime.

Pardew also tasted final defeat as a player, with Crystal Palace in 1990 when the Eagles were beaten by Manchester United.

"It's been a lucky competition for me - until the final," he said with a smile.